In this blog, I will demonstrate how to get the theme of the Classic SharePoint Online site and apply the same theme to another Classic SharePoint Online Site using SharePoint PnP PowerShell script.
Pre-requisites (Environment Details)
- Windows PowerShell
- SharePointPnpPowerShellOnline Module
Please install the SharePointPnpPowerShellOnline module if it’s not already present using the below command.
- Install-Module SharePointPnPPowerShellOnline
Source SharePoint Classic site with Red Theme
![]()
Destination SharePoint Classic site with Blue Theme
![]()
Variables Explanations in this Articles
- Your Service Account Name
$O365ServiceAccount="[email protected]"
- Your Service Account Password
$O365ServiceAccountPwd="Test123$"
- Change Source SharePoint Site URL
$SourceSharePointSiteURL="https://abc.sharepoint.com/sites/SharePointDocumentationCentre/teamsiteplayground"
- Change Destination SharePoint Site URL
$DestinationSharePointSiteURL="https://abc.sharepoint.com/sites/SharePointDocumentationCentre/DestinationSite"
Here you can see we have provided the password in plain text which you need to provide if you want this PowerShell script to run automatically through Timer Job or Scheduler .
For Manual Execution Please use Get-Credential command to read the User name and Password from the user input
Get Theme from Source SharePoint classic site
We have to get the theme of the Source SharePoint Classic site using the Get-PnPTheme command of PowerShell as a code snippet below.
#Connecting to Source Site to get the current theme
Connect-PnPOnline -Url $SourceSharePointSiteURL -Credentials $PSCredentials
#Getting the theme of the site
$Theme=Get-PnPTheme -WarningAction Ignore
Disconnect-PnPOnline
#Disconnect source site
First we have to connect the Source site using Connect-PnPOnline then get the theme of the site and store in the variable $Theme. Once we have stored the theme in the variable disconnect the site using Disconnect-PnPOnline command.
Set Theme to Destination SharePoint classic site
We have to set the theme to the Destination SharePoint classic site using the Set-PnPTheme as a code snippet below
#Connecting to Destination site to Apply theme
Connect - PnPOnline - Url $DestinationSharePointSiteURL - Credentials $PSCredentials
if ($Theme.Theme) {
#Apply the theme to the site
Set - PnPTheme - ColorPaletteUrl $Theme.Theme - ErrorAction SilentlyContinue
}
if ($Theme.ColorFile) {
#Apply the theme to the site
Set - PnPTheme - ColorPaletteUrl $Theme.ColorFile - ErrorAction SilentlyContinue
}
Disconnect - PnPOnline
#Disconnect destination site
The first step is to connect to the destination SharePoint classic site . if $Theme variable has ColorFile or Theme property, set the theme using Set-PnPTheme command.
In some sites I have observed $Theme.Theme is null so in that case we have to use $Theme.ColorFile as ColorPaletteUrl to set the theme of SharePoint Classic Site.
Complete PowerShell Script
#Powershell script to Get a Theme of a site and set the same theme to another SharePoint Online Classic site.
#Created By: Vinit Kumar
# Variable - Change the parameter as it need
$O365ServiceAccount = "[email protected]"
$O365ServiceAccountPwd = "Test123$"
$SourceSharePointSiteURL = "https://abc.sharepoint.com/sites/SharePointDocumentationCentre/teamsiteplayground"
# Change Source SharePoint Site URL
$DestinationSharePointSiteURL = "https://abc.sharepoint.com/sites/SharePointDocumentationCentre/DestinationSite"
# Change Destination SharePoint Site URL
#Ends
# Get credentials to connect sharepoint online[SecureString] $SecurePass = ConvertTo - SecureString $O365ServiceAccountPwd - AsPlainText - Force[System.Management.Automation.PSCredential] $PSCredentials = New - Object System.Management.Automation.PSCredential($O365ServiceAccount, $SecurePass)
#Ends
#Connecting to Source Site to get the current theme
Connect - PnPOnline - Url $SourceSharePointSiteURL - Credentials $PSCredentials
#Getting the theme of the site
$Theme = Get - PnPTheme - WarningAction Ignore
Disconnect - PnPOnline
#Disconnect source site
#Connecting to Destination site to Apply theme
Connect - PnPOnline - Url $DestinationSharePointSiteURL - Credentials $PSCredentials
if ($Theme.Theme) {
#Apply the theme to the site
Set - PnPTheme - ColorPaletteUrl $Theme.Theme - ErrorAction SilentlyContinue
}
if ($Theme.ColorFile) {
#Apply the theme to the site
Set - PnPTheme - ColorPaletteUrl $Theme.ColorFile - ErrorAction SilentlyContinue
}
Disconnect - PnPOnline
#Disconnect destination site
Destination SharePoint Classic site with Red Theme after Executing the Script
![]()
In this blog, we have talked about how to get a color theme of Source SharePoint Online Classic site and apply to a destination SharePoint online Classic site using SharePoint PnP PowerShell. This blog will be useful in scenarios where we need to create a new SharePoint site and apply an existing Corporate Site theme using PowerShell.